Being limited to 8gb of ram is genuinely the only thing on that list I care about (no backlight and no fast charging are teetering on the edge of me caring, but they aren't worth multiple hundreds of dollars) - Apple silicone is so fast now that (at least for my purposes) the performance segmentation between price points is basically meaningless.
A keyboard backlight is such a cheap and useful addition to a keyboard, it feels insulting not to get it. I cannot believe this is one of the ways they decided to cheap out.
I wouldn’t even care about the 8GB of ram if I could just add some myself.